Background and aims Recent research has suggested that metacognitions may play a role across the spectrum of addictive behaviours, including problematic use of technological devices. Metacognitions associated with problematic Smartphone use (PSU) have been scarcely investigated and measures to assess these beliefs are not yet available. The goal of the present study was (i) to develop the first self-report scale of metacognitions about Smartphone use; and (ii) to investigate its predictive validity with respect to PSU. Methods Twenty-four items concerning positive and negative metacognitions about PSU were framed and administered to a community sample of 701 Smartphone users (F = 66.2%; mean age 28.08 ± 9.81; age range 15-70). An exploratory factor analysis was first performed in a randomly allocated subsample of 350 participants. A confirmative factor analysis was then computed on a second subsample of 351 participants to test the fit of the factor structure identified. Results Findings revealed a 3-factor solution consisting of positive metacognitions concerning emotional and cognitive regulation, positive metacognitions concerning social advantages, and negative metacognitions about uncontrollability and cognitive harm of Smartphone use. Regression analysis showed that all the Metacognitions about Smartphone Use Questionnaire (MSUQ) factors were significantly associated to PSU independently of anxiety and depressive symptoms. Conclusions The MSUQ might be a promising self-report measure and further support research into the role of metacognition in technological addictions.The organization and dynamics of human genome govern all cellular processes - directly impacting the central dogma of biology - yet are poorly understood, especially at large length scales. Chromatin, the functional form of DNA in cells, undergoes frequent local remodeling and rearrangements to accommodate processes such as transcription, replication and DNA repair. How these local activities contribute to nucleus-wide coherent chromatin motion, where micron-scale regions of chromatin move together over several seconds, remains unclear. Activity of nuclear enzymes was found to drive the coherent chromatin dynamics, however, its biological nature and physical mechanism remain to be revealed. The coherent dynamics leads to a perpetual stirring of the genome, leading to collective gene dynamics over microns and seconds, thus likely contributing to local and global gene-expression patterns. https://www.selleckchem.com/ Hence, a possible biological role of chromatin coherence may involve gene regulation.The relationship between social capital and health has received extensive attention in fields such as public health, medicine, epidemiology, gerontology and other health-related disciplines. In contrast, the economics literature on this subject is relatively small. To address this research gap, we investigate the cross-disciplinary empirical literature using meta-analysis. We analyze 12,778 estimates from 470 studies. Our analysis finds that social capital is significantly related to a variety of positive health outcomes. However, the effect sizes are consistently very small. This finding is robust across different types of social capital (e.g., cognitive, structural, bonding, bridging, linking), and for many different measures of health outcomes (e.g., mortality, disease/illnesses, depression). The small effects that we estimate cast doubt on recent initiatives to promote health through social capital such as those by the WHO, the OECD, and US Healthy People 2020.The clinical management of medulloblastoma has undergone significant transformation since the recent dawn of the molecular era. The aim of this analysis was to evaluate citation and other bibliometric characteristics of the 100 most cited medulloblastoma articles in the literature to better understand the current state of our research efforts into this diagnosis. Elsevier's Scopus database was searched for the 100 most cited articles that focused on medulloblastoma. Articles were dichotomized as either primarily basic science (BSc) or clinical (CL) articles. Various bibliometric parameters were summarized and compared between BSc and CL articles using Pearson's Chi-square and Mann Whitney U tests. Of the 100 most cited articles, 52 were characterized as BSc articles and 48 as CL articles. Overall median (range) values were as follows citation count 252 (164-1,270); citation rate per year 17.5 (2.5-110); number of authors 11 (1-135); and publication year 2005 (1925-2014). Articles were published in a total of 40 different journals, and the majority originated in the US (n = 60). When compared to CL articles, BSc articles reported significantly greater citation rates per year (P less then 0.01), and more recent years of publication (P less then 0.01). In summary, although similar in overall proportion, BSc articles demonstrated significantly increased bibliometric parameters of impact in this field by the successful clustering molecular subtypes. Moving forward, it will be of great interest to see how the findings from these impactful BSc articles will translate into future clinical initiatives and subsequently high-impact CL articles.Purpose To evaluate the prophylactic, protocolized, and standardized use of a Montgomery tube in preventing pharyngocutaneous fistulas after total laryngectomy and neck dissection. Study design Retrospective cohort study. Setting Tertiary referral centre. Subject and methods A Montgomery salivary bypass tube was placed in 44 patients undergoing total laryngectomy and neck dissection, observing the percentage of fistula appearance and the time of start of deglutition. Comparison was made with a group of 28 patients prior to the implantation of the protocol in whom the tube was not used. Results There was a statistically significant decrease in the percentage of fistulas and an earlier onset of deglutition in the salivary bypass tube patients compared to those in whom the tube had not been used. Conclusion Prophylactic and standardized use of the Montgomery salivary bypass tube in patients undergoing total laryngectomy and neck dissection might decrease the incidence of pharyngocutaneous fistula and improve the course of one that is already established.